- ページ 8

アンプ Bladelius GRENDELのPDF 取扱説明書＆設置マニュアルをオンラインで閲覧またはダウンロードできます。Bladelius GRENDEL 9 ページ。 Multi channel amplifier

PHASING:

Stereo speakers must operate "in phase" with each other to produce a

focused stereo blend and to reinforce rather than cancel each other's output

at low frequencies. An in-phase connection is assured if the red (positive)

terminal on the amplifier is connected to the red (positive) terminal on the

loudspeaker in each channel. If your speakers are easily moved, their

phasing can easily be checked. Make the connections to both speakers,

place the speakers face-to-face only a few inches apart, play some music,

and listen. Then swap the connection of the two wires at the back of ONE of

the speakers, and listen again. The connection that produces the fullest, most

extended bass output is the correct one. Once you have determined the

correct phasing, connect the wires securely to the speaker terminals, being

careful not to leave any loose strands of wire that might touch the wrong

terminal and create a partial short-circuit, then move the speakers to their

intended locations.

If the speakers cannot easily be placed face-to-face, then phasing must rely

on the "polarity" of the connecting wires. The speaker terminals on the

amplifier are identified as red "+" and black "-" in each channel. The terminals

at the rear of the speakers are also marked for polarity, either via red and

black connectors or by labels: "+", "1", or "8 ohms" for positive, "-", "0", or "G"

for negative. The red "+" terminal on the amplifier should be connected to the

red (positive) terminal of the speaker in each channel. To facilitate this, the

two conductors comprising the speaker wire in each channel are different,

either in the colour of the wire itself (copper vs. silver) or in the presence of a

small ridge or rib-pattern on the insulation of one conductor. Use this pattern

to establish consistent wiring to both speakers of a stereo pair. Thus if you

connect the copper-coloured wire (or ribbed insulation) to the "+" amplifier

terminal in the Left channel, do the same in the Right channel. At the other

end of the wire, if you connect the copper-coloured wire (or the ribbed

insulation) to the red (positive) terminal on the left channel speaker, do the

same at the right channel speaker.

NOTE:

Safety organizations recommend that the speaker terminals of a very

powerful amplifier should be covered. Potentially dangerous voltages are

present on these terminals when the amplifier is producing maximum power.

For your protection and in order to